i have a question and really dont know where to post it. i have a friend who recently posted a blog about her mom being sick. this is what she said "[color=olive]my mom is very sick. the doctor told us that becuase my mom's thyroid went so hyper-active that her heart beat is at 580 beats a minute whereas you are only supposed to have around 180." now...i just have a question...i thought the "normal" heartbeat should be between 60-100 (80 is perfect and sounds real good to me) but i didn't know 180 was what you are supposed to have?? i have caught this girls in many lies before about her own health and i hope she isn't lying about her mothers problems:nono:,but her mom is home and doing okay but wouldnt you think 580 beats a min is alittle much for the body. my heartbeat has been high after surgery and i went into cardic arrest (sp?) and i had alot of trouble and mine wasn't to high but high enough where it affected my body. 580 to me would kill a person if it didnt get under control. i think that if it was that serious they would have kept her mom in the hosp. i'm just not sure what to think..is it true you can have a heart rate of 580 and still live and not be affected by it...and what is the normal heart rate for a adult?? thanks girls and guys!